Improved machine for making- seamless tobino



gti-11H11 W time ` strut JOHN MCCLOSKEY,

OF NEW'YORK, N. Y.

Lenen Patent No. cascadaa Mam. 16,1869.

IMPROVED MACHINE FOR MAKING SEANILSS TUBING.

'l'lxe Schedule referred to in these Letters Patent and making part of the lame.

To all whom it may conce/rn:y

Be it known that I, J ons McOLosKEY, of the oty,'

county, and State of New York, have invented a new and improved Machine for Making Seamless Tubing;

and I do hereby declare that the following is afnll, clear,

and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification. A

This invention relates to improvements in apparatus for making seamless tubing from molten metal, of copper, brass, lead, or other soft substance that will fuse at a low heat, but is more especially intended for making lead pipe, either tin-lined or not.

Figure 1 represents a sectional elevationof my improved apparatus. I'

Figure 2 represents a modified form ofdie, adapted to the formation of sheets.

Similar letters of reference indicate corresponding parts.

A represents a cylinder, havinga die, B, at the bottom, and a mandrel, C similar to other machines.

I arrange, around the extension-tube D, a waterchamber, E, and connect therewith water-pipes F, for supply and exhaust, suitably provided with cocks for regulating'the flow; and, in order to regulate the flow 'ofjh molten metal at the commencement of the drawing-operation, I provide, at the bottom of the tube D,

a gate, G, to arrest the flow, until the metal has cooled -around the mandrel O, after which the movement of the formed pipe may be regulated by drawing-rollers,

or any other means; and I propose to apply suitable means for bending the pipe, when being delivered from the machine, into any desired form, especially to form traps for sinks, water-closets, &c., which may be readily accomplished while the lead is in the warm and soft state in which it is delivered from the machine.

I make the core C hollow, and connect therewith a supply-pipe, H, leading to the bottom, and an exhaust- When it is designed to make tin-lined pipe, I propose to employ a secondary cylinder, M, which I propose to anange in a manner to bereadily applied to or ported, at its upper end, in any preferred manner, and at the lower end, by a ring, N, supported by a yoke, O, secured to the bottom of the cylinder, or by any other similar means, care being taken to present the lower, tapered end of the said tin-cylinder at the right position, relatively to the mandrel and the die, to deliver die and mandrel. .v 'Ihe melted-tin may from a furnace, I.

It may sometimes be desirable to employ a follower to act upon the lead; and, to enable a follower to be used, it may be provided with a hollow stem, Q,work ing over th'e cylinder M; but, in practice, I design to dispense with the use of a follower, and depend on the weight of the mass of metal above the die for condensing it.

X represents valves arranged in the follower, to open when it rises, to allow any lead which may leak around the follower, and ow over the top of it, to ilow back again when it rises.

The pipes leading from the furnaces to the cylinders should be provided with cocks, to regulate the flow, or stop it when required.

My improved cooling-apparatus E may be adapted to dies of other form, for making sheets, as represented iniig. 1.

I claim as new, and desire to secure by Letters Patent- 1. The construction and arrangement, with reference to each other, of the cylinder A, mould B, cooling-device E, and gate G, as and for the purpose-specified.

2. Wit-h the above, the arrangement of the valveplunger Q and removable cylinder N, as shown and described. l

3. The improved apparatus, herein described, its constituent parts being constructed and arranged together in the manner set forth.

JOHN MGOLOSKEY. 'Witnessesz FRANK Bnocxnnv, ALEX. F. Ronnnrs. v

removed from the cylinder A, and the die to be supthe tin to the interior of the lead as it is formed .by the be delivered to the said cylitaer 

